10 | Configuration
Installer reference guide
209
ERGA04~08E + EHVH04+08SU18+23E
Daikin Altherma 3 R F
4P629090-1C – 2022.08
INFORMATION
Only for systems with integrated domestic hot water tank: If the storage
temperature setpoint is higher than 50°C, Daikin recommends NOT to disable the
backup heater second step because it will have a big impact on the required time for
the unit to heat up the domestic hot water tank.
Capacity step 1
# Code Description
[9.3.4] [6‑03] ▪ The capacity of the first step of the backup
heater at nominal voltage.
Additional capacity step 2
# Code Description
[9.3.5] [6‑04] ▪ The capacity difference between the second
and first step of the backup heater at nominal
voltage. Nominal value depends on backup
heater configuration.
Equilibrium
# Code Description
[9.3.6] [5-00] Equilibrium: Deactivate backup heater (or
external backup heat source in case of a bivalent
system) above the equilibrium temperature for
space heating?
▪ 0: No
▪ 1: Yes
[9.3.7] [5-01] Equilibrium temperature: Outdoor
temperature below which operation of the
backup heater (or external backup heat source in
case of a bivalent system) is allowed.
Range: –15°C~35°C
Operation
# Code Description
[9.3.8] [4‑00] Backup heater operation:
▪ 0: Restricted
▪ 1: Allowed
▪ 2: Only DHW: Backup heater operation is
enabled for domestic hot water and disabled
for space heating.
INFORMATION
When heating of the DHW by the heat pump is too slow, it may affect a comfortable
operation of the space heating/cooling circuit. If so, allow the backup heater to assist
during DHW operation by setting [4-00]=1 or 2.
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